That's similar to the sensor I've seen all through Amazon. I don't mind the ring that holds the sensor (though I'm not that keen on the sensor disc), but sure enough, I'm probably going to have to swap the BB just to get an adjustable cup that'll hold it in place.
I wonder if swapping it to the drive side would work, if there's enough space on the spindle.
EDIT: No reason why it shouldn't...
EDIT #2 : Just ordered this 8FUN PAS from Amazon:
Which plug was your display hooked up to? Or is that function unique to your controller?
-Kurt